Yup!
So, take out the common factor and group the rest of the terms. You'll get this:
\[-2k - k^3 - 3k^2\]\[=-k(2+ k^2 + 3k)\]Rearrange the terms a bit:
\[ = -k (k^2+3k+2)\]
From this, we can see that the 2nd one is nowhere near to the answer.